fix issue #327

[wenlong139]

fix issue #327

[CLAassistant]

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[zrlw]

应该先提交PR到develop，另外git提交commit的用户名要配置成你github的用户名: wenlong139，否则你签不了Contributor License Agreement (点上面license/ca后面的Details打开签署页，然后确认同意），PR就没有办法合并。
git提交commit前也要配置邮箱，建议和你github账户设置的邮箱一致。
git config --global user.name github用户名
git config --global user.name github账户预留的邮箱